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R.R. Jha
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I need help with my project. It is a chemistry project. Indigestion

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I need help with my project. It is a chemistry project. Indigestion and Titration: An Acid-Base Titration. As a Lead Analytical Chemist I have to test 5 antacids with a back-titration that works. The following is provided: Each antacid is mixed with 40 mL of 0.1 M HCl so to see how much extra help each antacid pill needs to neutralize 40mL of 0.1 M HCL, I add 0.05 M NaOH drop by drop to back titrate the solution until the pH is neutral. The results are: Maalox/ Tums/ Mylanta/ CVS Brand/ Rennies
Mass of one 20.0g 21.0g 18.0g 18.3g 17.5g
Antacid mL NaOH 24.1mL 22.4mL 20.0mL 19.9mL 24.4mL
used in back

1. Which is the strongest antacid on a single dose basis? Which is the weakest? Explain and show calculations.
2. Which are the strongest and weakest on a by-weight(mass) basis? Explain and show calculations.
3. What might you use in the above experiment to get a color change to happen in the solution? At what pH would the solution have been neutral?
4. If you only had 0.1 M sulfuric acid available to run the tests, how would this have affected your calculations? Why?
The goal is to descibe precisely the tests of antacids in less than 150 words. Results need to be major findings from the tests and how the tests were performed
5. In most of the antacids you tested, the active ingredient is aluminum hydroxide. Here is an
unbalanced reaction that shows how this chemical neutralizes HCl (the main ingredient in
stomach acid). Please provide a balanced version of this equation:
Al(OH)3 + HCI  AlCl3 + H20
6. The FDA requires that all of its reports be super-brief—short enough so that they can be sent
via text message to all of its lab sites across the country. As you probably know, the word limit
for text messages is very small, so your goal here is to describe precisely what you did to test
the antacids in fewer than 150 words. In this brief report, you should provide the FDA with the
major findings from your tests and let them know generally how you performed your tests.
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Customer: replied 3 years ago.

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I'll wait. I don't know if it will help, but this same question has been asked and answered on here before.





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